Shadow Walker Invulnerability Nerf

The invulnerability nerf on the Shadow Walker armor was too much. I know that it was powerful, however, nerfing it by almost a whole second makes it worse than a "Dark Souls" roll. It makes it nearly impossible to practically use, and what's even harder is when your entire build is dependent on it. I understand that having new enchantments like the extra rolls were meant to even it out a little, but 0.3 seconds is just entirely impractical for a dungeon crawler meant for having fun. In short, this isn't a pvp or popularly competitive game so why nerf something so severely that it ruins the entire game for some players? Is there a way to meet in the middle even? Something that isn't as low as 0.3 seconds would be so much more helpful than nerfing it because some people exploited it. Thank you.